Question

Please help i am confused.

Answer 1

C. 87.5%

Explanation:

`P(A|B)`

this is what you are trying to find.

P(A | B) can be found by dividing the percentage who passed both, by the percentage who passed the first.

70/80 = 0.875

multiply by 100 to get percentage instead of decimal

87.5

Answer 2

87.5 percent

Explanation:

80 passed the first, 70 passed the second. 7/8 passed both. 7/8 as a percentage is 87.5.